Teens are usually blamed for distracted driving while using their cellphones, but a new study shows that their older counterparts do it as well.

Middle-age drivers are at risk for crashes due to their use of cellphones while driving, and they do it even while children are in the car.

They also feel pressured to answer work calls while driving, the study showed.

More than a quarter of car accidents are caused by cellphone use, the National Safety Council says.

Previous distracted driving studies had focused on teenagers and young people, but University of California, San Diego researchers wanted to find out the driving and cellphone habits of older people ages 30-64.

The survey found that 75 percent use hands-free cellphones while driving, and almost 90 percent of them considered themselves capable drivers while doing so.

Less than 30 percent knew that talking on a hands-free phone increases the risk of crashing to the same degree as driving at the legal alcohol limit, according to the study, which is published in the Journal of Transport & Health.